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CVE-2026-90069

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: crypto: acomp - allocate async request context when cloning ACOMP_REQUEST_ON_STACK() reserves only enough storage for the synch…

Published Sep 17, 2026EPSS 0.17%

Overview

CVE-2026-90069 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

crypto: acomp - allocate async request context when cloning

ACOMP_REQUEST_ON_STACK() reserves only enough storage for the

synchronous fallback. When an async implementation is selected, callers

clone that stack request before retrying, but acomp_request_clone()

currently copies only the stack-sized object. The clone therefore has no

storage for the async provider request context, and providers such as QAT

write past the allocation through acomp_request_ctx(). KASAN does report

a slab OOB write.

Allocate a zeroed clone large enough for the runtime acomp request size,

copy only the bytes present in the source object, and preserve the

existing fallback-on-allocation-failure behavior. Use the runtime reqsize

because an implementation may adjust it during tfm initialization.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/889fa17a0af09ff93a9166abc82ee7a654faa49bRefgit.kernel.org/stable/c/d48197cbd5d3476c7deea644972e9ec510865ec2Refgit.kernel.org/stable/c/ee440d4fc0d2f15894ab1f64c474a3adbc858880

How CyberStrike helps

Frequently asked questions

What is CVE-2026-90069?

CVE-2026-90069 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-90069?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-90069?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-90069?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-90069 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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